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Quick start method for power-supply system of CRDM (control rod drive mechanism)

A technology of drive mechanism and power system, applied in the direction of single-grid parallel feeding arrangement, etc., can solve problems such as low efficiency, manual operation, and impact on the life of the unit

Active Publication Date: 2013-09-25
SHANGHAI POWER EQUIP RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this starting method is that it takes a lot of time, and the entire starting process is completely manual, with low efficiency. At the same time, because direct starting will generate a high starting current, continuous multiple starting also has a great impact on the life of the unit.

Method used

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  • Quick start method for power-supply system of CRDM (control rod drive mechanism)
  • Quick start method for power-supply system of CRDM (control rod drive mechanism)

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Experimental program
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Embodiment

[0017] Such as figure 1 and figure 2 As shown, the present invention provides a method for quickly starting a control rod drive mechanism power supply system, the steps of which are:

[0018] Step 1. Start the motor of Unit 1

[0019] When the No. 1 unit 2 of the power system of the control rod drive mechanism is ready, the No. 1 unit input circuit breaker 3 is manually closed, and the motor 4 of the No. 1 unit is powered from the power bus 1 of the No. 1 unit. No. unit flywheel 5 drives No. 1 unit generator 6 to run.

[0020] Step 2. Generator excitation input of Unit 1

[0021] After the motor 4 of the No. 1 unit is running in the rated state, the automatic voltage regulator 8 of the No. 1 unit is automatically put into operation, the excitation current rises steadily from zero, the generator 6 of the No. 1 unit builds up the voltage steadily, and the machine terminal voltage rises steadily from zero. .

[0022] Step 3. Unit 1 generator connected to the grid

[0023] ...

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Abstract

The invention provides a method for quickly starting the power supply system of the control rod drive mechanism, which is characterized in that the steps are: start the No. 1 unit of the control rod drive power supply system, and start the No. 2 unit after the No. , during the start-up and acceleration process of the motor of the No. 2 unit, the generator of the No. 2 unit is automatically put into excitation and the synchronous device detects the relationship between the output voltage, frequency and phase of the generators of the two units, and instructs the generator output circuit breaker of the No. 2 unit to close. In order to complete the grid connection; when the synchronization is unsuccessful, the No. 2 unit motor input circuit breaker is automatically re-closed for a short time, and the synchronization device continues to detect and issue instructions to complete the grid connection. The invention has the advantages of providing a fast synchronous grid connection method, which can achieve the fast start-up and output capabilities of the power supply system of the control rod drive mechanism.

Description

technical field [0001] The invention relates to a method for starting a motor generating set with a flywheel in a power supply system of a control rod driving mechanism of a nuclear power plant. Background technique [0002] The control rod drive mechanism is the main control part of the reactor pressure vessel of the nuclear power plant. The task of the power supply system of the control rod drive mechanism is to ensure the power supply to the control rod drive mechanism and maintain its normal operation. The working stability, long-term operation reliability, dynamic response and good maintainability of the power supply system of the control rod drive mechanism play a decisive role in the normal operation of the control rod drive mechanism and the primary circuit of the reactor, and are of great importance to the safe and economical operation of the nuclear power plant. Great significance. [0003] The power supply system of the control rod drive mechanism includes two ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/40
Inventor 黄定忠俞高伟沈志华吴超群王宏印张甬袁育龙
Owner SHANGHAI POWER EQUIP RES INST